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   <div id="projectname">Reranker Framework (ReFr)
   
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   <div id="projectbrief">Reranking framework for structure prediction and discriminative language modeling</div>
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<div class="title">interpreter.H</div>  </div>
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<a href="interpreter_8_h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// Copyright 2012, Google Inc.</span>
<a name="l00002"></a>00002 <span class="comment">// All rights reserved.</span>
<a name="l00003"></a>00003 <span class="comment">//</span>
<a name="l00004"></a>00004 <span class="comment">// Redistribution and use in source and binary forms, with or without</span>
<a name="l00005"></a>00005 <span class="comment">// modification, are permitted provided that the following conditions are</span>
<a name="l00006"></a>00006 <span class="comment">// met:</span>
<a name="l00007"></a>00007 <span class="comment">//</span>
<a name="l00008"></a>00008 <span class="comment">//   * Redistributions of source code must retain the above copyright</span>
<a name="l00009"></a>00009 <span class="comment">//     notice, this list of conditions and the following disclaimer.</span>
<a name="l00010"></a>00010 <span class="comment">//   * Redistributions in binary form must reproduce the above</span>
<a name="l00011"></a>00011 <span class="comment">//     copyright notice, this list of conditions and the following disclaimer</span>
<a name="l00012"></a>00012 <span class="comment">//     in the documentation and/or other materials provided with the</span>
<a name="l00013"></a>00013 <span class="comment">//     distribution.</span>
<a name="l00014"></a>00014 <span class="comment">//   * Neither the name of Google Inc. nor the names of its</span>
<a name="l00015"></a>00015 <span class="comment">//     contributors may be used to endorse or promote products derived from</span>
<a name="l00016"></a>00016 <span class="comment">//     this software without specific prior written permission.</span>
<a name="l00017"></a>00017 <span class="comment">//</span>
<a name="l00018"></a>00018 <span class="comment">// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS</span>
<a name="l00019"></a>00019 <span class="comment">// &quot;AS IS&quot; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT</span>
<a name="l00020"></a>00020 <span class="comment">// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR</span>
<a name="l00021"></a>00021 <span class="comment">// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT</span>
<a name="l00022"></a>00022 <span class="comment">// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,</span>
<a name="l00023"></a>00023 <span class="comment">// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT</span>
<a name="l00024"></a>00024 <span class="comment">// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,</span>
<a name="l00025"></a>00025 <span class="comment">// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY</span>
<a name="l00026"></a>00026 <span class="comment">// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT</span>
<a name="l00027"></a>00027 <span class="comment">// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE</span>
<a name="l00028"></a>00028 <span class="comment">// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span>
<a name="l00029"></a>00029 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00030"></a>00030 <span class="comment">//</span>
<a name="l00031"></a>00031 <span class="comment">//</span>
<a name="l00036"></a>00036 <span class="comment"></span>
<a name="l00037"></a>00037 <span class="preprocessor">#ifndef RERANKER_INTERPRETER_H_</span>
<a name="l00038"></a>00038 <span class="preprocessor"></span><span class="preprocessor">#define RERANKER_INTERPRETER_H_</span>
<a name="l00039"></a>00039 <span class="preprocessor"></span>
<a name="l00040"></a>00040 <span class="preprocessor">#include &lt;iostream&gt;</span>
<a name="l00041"></a>00041 <span class="preprocessor">#include &lt;fstream&gt;</span>
<a name="l00042"></a>00042 <span class="preprocessor">#include &lt;string&gt;</span>
<a name="l00043"></a>00043 <span class="preprocessor">#include &lt;tr1/unordered_map&gt;</span>
<a name="l00044"></a>00044 <span class="preprocessor">#include &lt;tr1/unordered_set&gt;</span>
<a name="l00045"></a>00045 
<a name="l00046"></a>00046 <span class="preprocessor">#include &quot;<a class="code" href="environment-impl_8_h.html" title="Provides an environment for variables and their values, either primitive or Factory-constructible obj...">environment-impl.H</a>&quot;</span>
<a name="l00047"></a>00047 
<a name="l00048"></a>00048 <span class="keyword">namespace </span>reranker {
<a name="l00049"></a>00049 
<a name="l00050"></a>00050 <span class="keyword">using</span> std::iostream;
<a name="l00051"></a>00051 <span class="keyword">using</span> std::ifstream;
<a name="l00052"></a>00052 
<a name="l00053"></a>00053 <span class="keyword">class </span>EnvironmentImpl;
<a name="l00054"></a>00054 
<a name="l00120"></a><a class="code" href="classreranker_1_1_interpreter.html">00120</a> <span class="keyword">class </span><a class="code" href="classreranker_1_1_interpreter.html" title="Provides an interpreter for assigning primitives and Factory-constructible objects to named variables...">Interpreter</a> {
<a name="l00121"></a>00121  <span class="keyword">public</span>:
<a name="l00125"></a><a class="code" href="classreranker_1_1_interpreter.html#acafa4a552bb289cecf9ef1b9cbc25006">00125</a>   <a class="code" href="classreranker_1_1_interpreter.html#acafa4a552bb289cecf9ef1b9cbc25006" title="Constructs a new instance with the specified debug level.">Interpreter</a>(<span class="keywordtype">int</span> debug = 0) : debug_(debug) {
<a name="l00126"></a>00126     env_ = <span class="keyword">new</span> <a class="code" href="classreranker_1_1_environment_impl.html" title="Provides a set of named variables and their types, as well as the values for those variable...">EnvironmentImpl</a>(debug);
<a name="l00127"></a>00127   }
<a name="l00128"></a>00128 
<a name="l00130"></a><a class="code" href="classreranker_1_1_interpreter.html#a7be9adf0636a392b10a85d179c80aa11">00130</a>   <span class="keyword">virtual</span> <a class="code" href="classreranker_1_1_interpreter.html#a7be9adf0636a392b10a85d179c80aa11" title="Destroys this interpreter.">~Interpreter</a>() {
<a name="l00131"></a>00131     <span class="keyword">delete</span> env_;
<a name="l00132"></a>00132   }
<a name="l00133"></a>00133 
<a name="l00135"></a><a class="code" href="classreranker_1_1_interpreter.html#ae3489eaf9df30f95e72e1b477769e812">00135</a>   <span class="keywordtype">void</span> <a class="code" href="classreranker_1_1_interpreter.html#ae3489eaf9df30f95e72e1b477769e812" title="Evaluates the statements in the specified text file.">Eval</a>(<span class="keyword">const</span> <span class="keywordtype">string</span> &amp;filename) {
<a name="l00136"></a>00136     filename_ = filename;
<a name="l00137"></a>00137     ifstream file(filename_.c_str());
<a name="l00138"></a>00138     <a class="code" href="classreranker_1_1_interpreter.html#ae3489eaf9df30f95e72e1b477769e812" title="Evaluates the statements in the specified text file.">Eval</a>(file);
<a name="l00139"></a>00139   }
<a name="l00140"></a>00140 
<a name="l00142"></a><a class="code" href="classreranker_1_1_interpreter.html#a9c6311e9b19114c92573b3d53daef5ac">00142</a>   <span class="keywordtype">void</span> <a class="code" href="classreranker_1_1_interpreter.html#a9c6311e9b19114c92573b3d53daef5ac" title="Evaluates the statements in the specified string.">EvalString</a>(<span class="keyword">const</span> <span class="keywordtype">string</span>&amp; input) {
<a name="l00143"></a>00143     <a class="code" href="classreranker_1_1_stream_tokenizer.html" title="A simple class for tokenizing a stream of tokens for the formally specified language used to construc...">StreamTokenizer</a> st(input);
<a name="l00144"></a>00144     <a class="code" href="classreranker_1_1_interpreter.html#ae3489eaf9df30f95e72e1b477769e812" title="Evaluates the statements in the specified text file.">Eval</a>(st);
<a name="l00145"></a>00145   }
<a name="l00146"></a>00146 
<a name="l00148"></a><a class="code" href="classreranker_1_1_interpreter.html#a2515d630df648bb68453ca622484d3f5">00148</a>   <span class="keywordtype">void</span> <a class="code" href="classreranker_1_1_interpreter.html#a2515d630df648bb68453ca622484d3f5" title="Evaluates the statements in the specified stream.">Eval</a>(istream &amp;is) {
<a name="l00149"></a>00149     <a class="code" href="classreranker_1_1_stream_tokenizer.html" title="A simple class for tokenizing a stream of tokens for the formally specified language used to construc...">StreamTokenizer</a> st(is);
<a name="l00150"></a>00150     <a class="code" href="classreranker_1_1_interpreter.html#ae3489eaf9df30f95e72e1b477769e812" title="Evaluates the statements in the specified text file.">Eval</a>(st);
<a name="l00151"></a>00151   }
<a name="l00152"></a>00152 
<a name="l00153"></a>00153 
<a name="l00154"></a><a class="code" href="classreranker_1_1_interpreter.html#a5f3ebffb7c21cd29eeec4fb659f3b948">00154</a>   <span class="keywordtype">void</span> <a class="code" href="classreranker_1_1_interpreter.html#a5f3ebffb7c21cd29eeec4fb659f3b948">PrintEnv</a>(ostream &amp;os)<span class="keyword"> const </span>{
<a name="l00155"></a>00155     env_-&gt;<a class="code" href="classreranker_1_1_environment_impl.html#a19bdb0da8cbaa2ba188d4d6415241741">Print</a>(os);
<a name="l00156"></a>00156   }
<a name="l00157"></a>00157 
<a name="l00167"></a>00167   <span class="keyword">template</span>&lt;<span class="keyword">typename</span> T&gt;
<a name="l00168"></a><a class="code" href="classreranker_1_1_interpreter.html#a7a303a24ec83502b36bbccce670e3868">00168</a>   <span class="keywordtype">bool</span> <a class="code" href="classreranker_1_1_interpreter.html#a7a303a24ec83502b36bbccce670e3868" title="Retrieves the value of the specified variable.">Get</a>(<span class="keyword">const</span> <span class="keywordtype">string</span> &amp;varname, T *value)<span class="keyword"> const </span>{
<a name="l00169"></a>00169     <span class="keywordflow">return</span> env_-&gt;<a class="code" href="classreranker_1_1_environment_impl.html#ab3f0b07dc01a5fc63a4ab93ebe14bda6" title="Retrieves the value of the variable with the specified name and puts into into the object pointed to ...">Get</a>(varname, value);
<a name="l00170"></a>00170   }
<a name="l00171"></a>00171 
<a name="l00178"></a><a class="code" href="classreranker_1_1_interpreter.html#a0f96ef75e5bc7122eddbdd5a7faf7f25">00178</a>   <a class="code" href="classreranker_1_1_environment_impl.html" title="Provides a set of named variables and their types, as well as the values for those variable...">EnvironmentImpl</a> *<a class="code" href="classreranker_1_1_interpreter.html#a0f96ef75e5bc7122eddbdd5a7faf7f25" title="Returns a pointer to the environment of this interpreter.">env</a>() { <span class="keywordflow">return</span> env_; }
<a name="l00179"></a>00179 
<a name="l00180"></a>00180  <span class="keyword">private</span>:
<a name="l00181"></a>00181   <span class="keywordtype">void</span> <a class="code" href="classreranker_1_1_interpreter.html#ae3489eaf9df30f95e72e1b477769e812" title="Evaluates the statements in the specified text file.">Eval</a>(<a class="code" href="classreranker_1_1_stream_tokenizer.html" title="A simple class for tokenizing a stream of tokens for the formally specified language used to construc...">StreamTokenizer</a> &amp;st);
<a name="l00182"></a>00182 
<a name="l00183"></a>00183   <span class="keywordtype">void</span> WrongTokenError(<span class="keywordtype">size_t</span> pos,
<a name="l00184"></a>00184                        <span class="keyword">const</span> <span class="keywordtype">string</span> &amp;expected,
<a name="l00185"></a>00185                        <span class="keyword">const</span> <span class="keywordtype">string</span> &amp;found,
<a name="l00186"></a>00186                        <a class="code" href="classreranker_1_1_stream_tokenizer.html#a43c556f438853bde82330f852de412da" title="The set of types of tokens read by this stream tokenizer.">StreamTokenizer::TokenType</a> found_type) <span class="keyword">const</span>;
<a name="l00187"></a>00187 
<a name="l00188"></a>00188   <span class="keywordtype">void</span> WrongTokenTypeError(<span class="keywordtype">size_t</span> pos,
<a name="l00189"></a>00189                            <a class="code" href="classreranker_1_1_stream_tokenizer.html#a43c556f438853bde82330f852de412da" title="The set of types of tokens read by this stream tokenizer.">StreamTokenizer::TokenType</a> expected,
<a name="l00190"></a>00190                            <a class="code" href="classreranker_1_1_stream_tokenizer.html#a43c556f438853bde82330f852de412da" title="The set of types of tokens read by this stream tokenizer.">StreamTokenizer::TokenType</a> found,
<a name="l00191"></a>00191                            <span class="keyword">const</span> <span class="keywordtype">string</span> &amp;token) <span class="keyword">const</span>;
<a name="l00192"></a>00192 
<a name="l00194"></a>00194   <a class="code" href="classreranker_1_1_environment_impl.html" title="Provides a set of named variables and their types, as well as the values for those variable...">EnvironmentImpl</a> *env_;
<a name="l00195"></a>00195 
<a name="l00198"></a>00198   <span class="keywordtype">string</span> filename_;
<a name="l00199"></a>00199 
<a name="l00201"></a>00201   <span class="keywordtype">int</span> debug_;
<a name="l00202"></a>00202 };
<a name="l00203"></a>00203 
<a name="l00204"></a>00204 }  <span class="comment">// namespace reranker</span>
<a name="l00205"></a>00205 
<a name="l00206"></a>00206 <span class="preprocessor">#endif</span>
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